title: [Computer aided design and computer aided manufacture of template for crown lengthening].
abstract: OBJECTIVE
  To introduce a method applied in computer aided design and computer aided manufacture (CAD-CAM) of template for crown lengthening.
  
  
  METHODS
  Point cloud data of dental stone model of the patient in the plan of crown lengthening surgery was obtained by laser scanning. The following processes were carried out, constructing 3-D curve of the gingiva, drawing template outline on the triangle mesh model, shelling it for 3-D model of template, and transferring the data to rapid prototyping equipment for manufacture.
  
  
  RESULTS
  3-D model of the template was preliminarily accomplished. The resin template was manufactured with rapid prototyping equipment. The fitness between resin template and plaster model was good.
  
  
  CONCLUSIONS
  This method, as an integrated procedure including data acquisition, 3-D computer modeling and fabrication by rapid prototyping, is feasible to implement CAD-CAM of template for crown lengthening.
authors.affiliation: Department of Prosthodontics,School of Stomatology, China Medical University. Shenyang 110002, Liaoning Province, China.E-mail:zhaoyanbo619@163.com.
authors.forename: Yan-bo
authors.initials: YB
authors.lastname: Zhao
authors.forename: Lin
authors.initials: L
authors.lastname: Wu
authors.forename: Xiao-lin
authors.initials: XL
authors.lastname: Tang
authors.forename: Chen
authors.initials: C
authors.lastname: Guo
mesh_terms: D017076:Computer-Aided Design; D016556:Crown Lengthening; D003442:Crowns; D006801:Humans